fitzsimmons



J. T. FITZSIMMONS IGNITION SYSTEM Sept. Z 1924. 1,507,309

Z Uff/'Eg Sept. 2 1924.

- J. T. FITZSIMMONS IGNITION SISTEM Filed June 2o. 1921 2 shun-sneu. 2

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Patented Sept. 2, T924.

JQHN T. FITZSIMMONS, F DAYTON, OHIO,

ASSIGNOR T0 THE DAYTON. ENGINEERIG LABORATORIES COMPANY, OZE` DAYTGN, OHIO, A. CORPORATION O'F OHIO.

IGNITION SYSTEM.

Application led .Tune 20, 1921. Serial No. 478,786.

To all whom t may concern:

Be it known that T, JOHN T. FITzsIMMoNs, a citizen of the United States of America, residing at Dayton, county of Montgomery,

s State of Ohio, have invented certain new and useful Improvements in ltgnition Systems, of which the following is a full, clear, and exact description.

This invention relates to ignition apparalo tus for supplying electrical ignition to the cylinders of'an internalcombustion engine and to an auxiliary appliance such as a liquid fuel burner for heating the engine intake.

' @ne of the objects of the invention is to provide an ignition system including a batttery ignition coil and timer for engine ignition and another ignition device for the auxiliary appliance which is constructed to 2o vlbe controlled by! the engine ignition timer without change thereto and without interfering with the engine ignition; and it is an object to cut down the current consumption by the other ignition device as the speed pf the engine increases.-

Another object is to provide an ignition unit for the auxiliary appliance so constructed that it may be installed with the usual engine ignition equipment,v by making certain connections therewith but without changing the equipment.

Tn this connection it is a further object to provide a unitary structure including an ignition coil for the auxiliary equipment and control devices for said coil which may be connected onto the regular engine ignition system.

\ Other and further objects and advantages .of the present invention will be apparent from the following description, reference being had to the accompanying drawings, wherein a preferred embodiment of the present invention is clearly shown.

Tn the drawings:

Fig. 1 is a wiring diagram of the engine and auxiliary ignition system; and

Figs. 2, 3 and 4 are sectional, top and Side views, respectively, of an ignition unit for the auxiliary appliance.

Referring to F ig. 1, a grounded battery 20 is connected by wire 21, ignition switch 22, Wire 23, ignition resistance 24 with engine ignition coil 25 having primary 26 and secondary 27, and with grounded timer 55 28 having contacts 29 and 30 intermittently separated by theoperation of the engine. 31 is a condenser in shunt with contacts 29, 30. Distributor 32 connects in recurrent sequence the secondary 27 with engine plugs 33.

The ignition unit for the auxiliary appliance is designated as a whole by numeral 40 and includes an ignition coil 4l having .core 42 primary 43 and secondary 44 grounded at one end on primary 43 and connected to a grounded spark plug 45 of the auxiliary c appliance such as a liquid fuel burner. A magnetic yoke 46 is magnetically related to core 42 and supports a core 47 and a leaf spring conducting blade 48. Magnet winding 49 surrounds core 47 and is connnected by terminal 50 and wire 5l with wire 23, and by terminal 52 and wire 53 with primary engine ignition circuit between primary 26 and timer contact 29.

Blade 48 supports vibrator armature 55 carrying a stop -56 for engaging the free end of blade 48, and blade 48 supports vibrator contact 57 normally held by blade 48 against contact 58 supported by adjusting screw 59 connected by wire 60 with primary 43. Primary 43 is connected by wire 61 with terminal 50. Condenser 62 is connected in parallel with contacts 57, 58.

When the switch 22 is closed the engine ignition devices 25, 28 and 32 operate in usual manner to provide ignition for the plugs 33. While the timer contacts 29, 30 are open the vibrator elements 48, 55 and 56 cooperate with the coil 4l intermittently to energize coil 4l to supply ignition at plug 45. But when contacts 29, 30 are closed the holding coil 49 is energized by current from battery 20, so that the instant contacts 57, 58 are separated armature will be held down in contact separating position until the timer contacts 29, 30 open.

At low engine speeds the timer Contact open period will be greater than at higher speeds hence the vibrator will operate longer at low engine speeds. This feature is advantageous, where it is desired to furnish ignition to a liquid fuel burner for heating the engine intake manifold. Such burners generally require more ignition when starting cold than when warmed up and the engine is running on its own power. Therefore during the cranking of the engine the duration of the periodically occurring spark showers produced by unit 40 will be relatively great'to supply this need for increased 110 burner ignition. But during the operation of the burner while the engine is running, such burners do not generally require much vignition to keep them lighted. The periodicity of armature 55 is such that at high engine speeds it can vibrate only once or twiceduring the closed period of the timer contacts, thereby causing one or two sparks to occur in recurrent succession at plug 45. Such ignition is all that is required for normal burner operation. Hence the present invention tends to use up battery current only as needed.

Figs. EZ, 3 vand 4 show an embodiment of of unit 40 in a unitary structure. Housing tube 7U resting .on base 7l supports brackets 72 and 73 supporting coil 4l, the core 42 of which projects through coil housing cover 74 'which rests on tube 70 and supports `yoke 46. Yoke 4G is spaced magnetically from the core 42 by gap T5 and has ears 76 and 77 supporting the housing of condenser The condenser 62 is grounded on cover 74 and the other terminal (32 is connected with wireGt) to a clip 78 and thence to a plate 79 supporting the screw 5t). Plate 7 9 is mounted upon but insulated lroni a post St) extending from cover T4.

For grounding the contact 57 and condenser 62 on the same ground as battery 20 and timer 28, terminal 8l is provided.

1Vi1es 49a and 49b connect coil 4f) with ter*-A minals 50 and 52, respectively.

Post 81 rising from cover 74 has a threaded end cooperating with nut 82 to retain in place cover 83 for the vibrator, condenser and holding coil.

To install the unit 4() it is only necessary to connect terminal 50 with the battery terminalv of the engine ignition coil, the terminal 52 with the timer terminal ot' the ignition coil, the terminal 81 with ground (the engine or automobile trame) and Atfhe high tens-ion terminal 44a ole coil 4l with the auxiliary spark plug` such as the plugat the liquid i'uel burner.

In order to quiet the action of thev vibrator rubber cushions 56 and 4T arc provided, it being understood that cushion 5G will strike spring blade 48 before armature 55 strikes cushion 47a.

Vhile the form of mechanism herein shown and described constitutes a preferred form of embodiment of the invention, it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow.

l/Vhat I claim is as follows:

1. In an ignition system for internal combustion engines, the combination with a current source; of one or more engine spark plugs; ignition means for said engine plugs including' an ignition coil and a timer; another spark plug for separate ignition purposes; and other ignition means electrically controlled by said timer for supplying ignition periodically lor said other pluO.

:2. In an ignition system for internal combustion engines, the combination with a current source; of one or more engine spark plugs; ignition means for said engine plugs including an ignition coil and a timer; another spark plug'for other ignition purposes; a second ignition coil; and electrical means controlled by the position of the timer contacts for causing the .second coil periodically to supply ignition for said other plug.

In an ignition system for internal combustion engines, the combination with a current source; of an ignition coil for engine ignition; an ignition coil 'for other ignition purposes; a vibrator intermittently to interrupt the circuit between the second coil and the current source; a timer periodically to connect the iirst coil with source; and means under the control of the timer for rendering the vibrator periodically inoperative.

4. In an ignition system for internal combustion engines, the combination with a current source; of an ignition 'coil for engine ignition; an ignition coil for other ignition purposes; a vibrator intermittently to interrupt the circuit between the second coil and the current source; a timer periodically to connect the first coil with the current source; and means under the control of the timer for rendering the vibrator periodically inoperative, when the timer connects the lirst ignition coil with the current source.

5. In an ignition system :tor internal combustion engines, the combination with a curthe current rent source; of an ignition coil for engine v ignition; an ignition coil for other ignition purposes; a vlbrator mtermittently to inter- 'rupt the circuit between the second coil "1ent"s`ource; of an ignition coil for engine ignition; an ignitionvcoil for other ignition purposes; a vibrator intermittently to interrupt the circuit between the second coil and the current source; a timer periodically to' connect the irst coil with the current source; and an electromagnet rendered operative to arrest the movement of the vibrator when the timer connects the first coil with the current source. v

7 In an ignition system for internal combustion engines, the combination with a current source; of an ignition coil for engine ignition; an ignition coil for other ignition purposes; a vibrator controller for said second coil including cooperating contacts and an armature for intermittently effecting sep- Y said vibrator amature to hold thesame in contact separating position.

8. In an ignition system for internal com.- bustion engines," the combination with a current source; of an ignition coil for engine ignition; an ignition coil for other ignition purposes; a vibrator controller for said second coil including cooperating contacts and an armature magnetically related to the core of said second ignition coil for intermittently effecting separation of said contacts; a timer periodically to connect the first coil with the current source; and an electromagnet connected with said current source by` the closing of the contacts of said timer, and cooperating with said vibrator armature to hold the same in contact separating position, said electromagnet havin a core magnetically related to the core 0% said second ignition coil.

9. In an ignition system for internal combustion engines, the combination with a current source; of an xengine ignition coil; an engine operated circuit closer for intermittently connecting the coil land current source; a second ignition coil; a secondcircuit closer mechanically separate from said .irst circuit closer for connecting the second coil and current source; and means under control of the first circuit closer for modifying the action of the second circuit closer.

10. In an ignition system for internal combustion engines, the combination with a current source; of an engine ignition coil; an engine operated circuit closer for intermittently connecting the coil and current source; a second ignition coil; a second circuit closer for connecting the -second coil and current source; and electrically operated means under control of the first circuit closer for rendering the second circuit closer inoperative.

11. In an ignition system for internal combustion engines, the combination with a current source; of anengine ignition coil; an engine operated ltimer having a pair of contacts for intermittently connecting the coil and current source; a second ignition coil; a second circuit closer for connecting the second coil and current source; and electrical means rendered operative by the closing of said contacts for rendering the second circuit closer inoperative.

12. In an ignition system for internal combustion engines, the combination with a current source; 'of an engine ignition coil; an engine operated timer having a pair of contacts Afor intermittently connecting the coil and current source; other ignition appa-f ratus including a second coil; and electrical means rendered operative `by the closing of Said contacts for rendering said other apparatus inoperative.

13. Auxiliary ignition apparatus for use with an engine ignition system comprising a current source, coil and timer, said auxiliary apparatus including a 'brator coil connected with'the current source, and a vibrator controlling electromagnet connected inshunt with the engine ignition primary co v 14. In combination with an engine ignition system, an auxiliary ignition apparatus comprising a mechanically separate unitary structure lncluding a vibrator coil and an electromagnet for controlling the vibrator, said electromagnet being controlled by the engine ignition system.

15. In combination with an engine ignition system, an auxiliary ignition appara- 95 tus comprising a unitary structure including a vibrator coil havin a core, and anelectromagnet for controlling the vibrator'v and having a magnetic circuit including the vibrator coil core, said electromagnet being controlled by the engine ignition system.

16. In combination with an engine ignition system, an auxiliary ignition apparatus comprising a housing, an ignition coil mounted Within the housing, a coil core extending outside the housing, a vibrator mounted on the housing adjacent the core, and an electromagnet for controllin the -vibrator mounted on the housing an having a magnetic circuit including a portion of 10@ said core, said electromagnet being controlled by the engine ignition'systein.

-In testimony whereof I heretoaliix my signature.

J OHN T. FITZSIMMNS.

Witnesses:

InviN A. GREEWALD, Wannen W. Braam. 

